深基坑内支撑梁静态精准爆破拆除施工方法研究

Static Precision Blasting Demolition Method Research in Deep Foundation Pit Support Beam

在城市建筑密集区,由于受周边环境的影响,基坑支护只能采用内支撑体系,支撑作为临时支撑结构后期需要拆除,静态爆破采用静态膨胀剂静爆拆除,膨胀力缓慢地、静静地传给混凝土支撑使其破碎,具有安全、施工快速、无震动、无飞石、噪音小、操作简单等特点,因此完善深基坑水平临时支撑静爆拆除是一个新课题,具有非常显著的现实意义。

In urban built-up area,due to the surrounding environment,inner supporting system for the foundation pit supporting can only be used. Late support as a temporary support structure need to be removed,static static blasting demolition blasting in static expansion agent, expansion force slowly,quietly to the concrete support make it broken,its safety,construction speed,no vibration,no slungshot,low noise,s imple operation etc.,thus improve the level of deep foundation pit of temporary support static blasting demolition is a new subject,has significant practical significance.